COME!

 My Pembroke welsh corgi (a purebred) is now 6 months old and won't come! We have tried everything, we get going with clicker training and he gets the hang of it but, sooner or later he doesn't want his hot dogs and stops to snorrfle on the ground. My brother and I unfortunately have taught him a tag game where we chase him and he loves it! But, now he won't come and we have had him for 3 months and we are at our wits end. When you call him he sits there and looks at you and tries to decide to come and if he decides yes, he stops and sniffs everything on the ground. He is really smart and looks to see if you have a treat in your hand. If he think you do he comes a little closer and sniffs. If he can't smell anything he runs away. Please help!!!!